Improvement in oil-presses



UNITED STATES i ik PATENT EEICE.`

IMPROVEMENT IN OIL-PRESSES.

Speciiication forming part of Letters Patent No. 47,44 l, datedApril 25,1865.

To all whom it may concern:

Be it known that I, WM. V. MGKENZIE, of Jersey City, in the county ofHudson and State of New Jersey, have invented a new and ImprovedOillress; and I do hereby declare that the following is a full, clear,and exact description thereof, which will enable those skilled in thea-rt to make and use the same, reference being had to the accompanyingdrawings, forming part of this specification, in which- Figure vlrepresents a longitudinal vertical section et this invention, the line.fr a', Fig. 3, indicating the plane of section. Fig. 2 is a transversevertical sect-ion of the same taken y in the plane indicated by the lineyy, Fig. 3.

Fig. 3 is a plan or top view ofthe same, partly in section.

Similar letters of reference indicate corresponding parts.

lhis invention consists in the use of doors sliding in grooves in theadjoining movable sides of the press boxes, said grooves being arrangedin such a manner that they retain the slides rmly in position and compelthem to close tight when the press is filled, and at the same time theydo not interfere with the sliding motion of sides of the press boxes.

'lhe invention consists also in the application ot' a steam-supply, andot' an exhaustpipe extending over the entire length of the press, andcommunicating' with each pressbox by small pipes in such a manner thatsaid small pipes will have sntlicient spring to allow the sides of thepress-boxes being moved the requisite distance, and all complicated`ioints in these pipes can be avoided.

A represents a press composed of a frame, B, with rigid end pieces-a,which are connected by longitudinal bars b. 'l`he bars form the guidesfor the sides B of the pressboXes C, and said sides are so arranged thatthey can be moved apart and Jforced together by a hydraulic press or anyother suitable means.

The top and bottom of each press-box is formed by a slide, D, which isprovided with a lip, o, as shown in Fig. l, and which is guided ingrooves d, cut in the sides B, the proper places. By the means of thelips c the slides D are compelled to follow the motion of the sides B,and when these sides closeup, thesides drop into mortises g, as

shown in Fig. 3, where the sides are shown apart and the slides ready toenter said mortises. It will be noticed that the slides D are. neverallowed to rise from the inner edges ot their guide-grooves, and, it'the box is iilled with lard or other material, nothing is allowed to retbetween the slide and said y inner edges of the grooves which wouldprevent the same from closing tight, and at the same time the slide isconstantly in place, it is not allowed to drop out, itis made in asimple and easy manner, and it is more durable than any other coverwhich has come under my notice.

The press-boxes are supplied with steam n from a pipe, E, which extendsthroughout the entire length ot' the press, and the eX- haust-steam iscarried oit' through a pipe, F. These pipes communicate with the severalpress-boxes by means otl branch pipese f, and they are situated at sucha height above the press, and said branch pipes are made so thin thatthe same retain spring enough `to allow of moving the sides B withoutrendery in g it necessary to construct them with a complicated joint.

The press can thus be supplied with steam in a simple and cheap manner,the pipes or joint are not liable to get out ot order, and the operationof pressing is materially A constructed and operating substantially asand for the purpose described.

3. Though l do not claim broadly thensc of steam for heating a press, Iclaim the pipes E F with branch pipes e f, arranged in combination `withthe movable sides of a press, substantially as specified, so that saidbranch pipes retain suiiicient spring to allow of the motion of thesides of the pressboxes.

WM. V. MGKENZIE. Witnesses M. M. LIVINGSTON, U. L. TOPLIEF.

